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<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="css/main.css">
</head>
<body>
<div class="reg_lin1">
    <div class="lin1_1">常用邮箱常用邮箱常用邮箱常用邮箱f：</div>
    <div class="lin1_2"><input type="text" class = "reg_text" id = "email" name = "email"/></div>
    <div class="lin1_3"></div>
</div>
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</body>
</html>